Convertible seating unit

In a multipassenger seating unit having a plurality of seating positions, at least one of which has a backrest which is pivotally mounted for reclining movement relative to the base frame of the unit and includes portions which are selectively convertible from being useable for seating to being useable as a seat separator and cocktail table to enhance the comfort of an occupant of an immediately adjacent seating position, the improvement comprising a primary back frame member pivotally mounted at its lower end for reclining movement relative to the base frame of the seat, a secondary frame assembly pivotally mounted to a multiple link support assembly which is pivoted at or near its lower end to said primary back frame member and to said base frame on the same pivot axis as said back frame primary member, said secondary frame assembly having a back support cushion located on the side thereof which faces forward when said at least one seating position is in a seating mode and a cocktail table located on the opposite side thereof which is horizontal when said at least one seating position is in use as a seat separator, a headrest assembly pivotally mounted to said secondary frame assembly by an elongated link and means for selectively latching said headrest assembly to said elongated link, said headrest assembly being adapted when unlatched, to be pivoted downwardly approximately 180.degree. from a use position when said back support cushion is in its seating use position to a storage position in contact with a surface portion of said back support cushion, said headrest assembly being further pivotable approximately 90.degree. with said secondary frame assembly while in said storage position to a relatively hidden position under said cocktail table when said secondary frame assembly and multiple link support assembly are moved so as to deploy said cocktail table in its use position as a seat separator.